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| author |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2021-03-25 11:46:10 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2021-03-25 11:46:10 -0700 |
| commit | 5acac83bf2e42f51ab9fd315d657798754bf0bb8 (patch) | |
| tree | 564be60664226649f00798cc3afb72d72d0ed24d /arch/s390/net/bpf_jit_comp.c | |
| parent | Input: cyttsp - verbose error on soft reset (diff) | |
| parent | Linux 5.12-rc4 (diff) | |
| download | linux-dev-5acac83bf2e42f51ab9fd315d657798754bf0bb8.tar.xz linux-dev-5acac83bf2e42f51ab9fd315d657798754bf0bb8.zip | |
Merge tag 'v5.12-rc4' into next
Sync up with the mainline to bring in newest APIs.
Diffstat (limited to 'arch/s390/net/bpf_jit_comp.c')
| -rw-r--r-- | arch/s390/net/bpf_jit_comp.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c index 0a4182792876..f973e2ead197 100644 --- a/arch/s390/net/bpf_jit_comp.c +++ b/arch/s390/net/bpf_jit_comp.c @@ -1205,18 +1205,23 @@ static noinline int bpf_jit_insn(struct bpf_jit *jit, struct bpf_prog *fp, jit->seen |= SEEN_MEM; break; /* - * BPF_STX XADD (atomic_add) + * BPF_ATOMIC */ - case BPF_STX | BPF_XADD | BPF_W: /* *(u32 *)(dst + off) += src */ - /* laal %w0,%src,off(%dst) */ - EMIT6_DISP_LH(0xeb000000, 0x00fa, REG_W0, src_reg, - dst_reg, off); - jit->seen |= SEEN_MEM; - break; - case BPF_STX | BPF_XADD | BPF_DW: /* *(u64 *)(dst + off) += src */ - /* laalg %w0,%src,off(%dst) */ - EMIT6_DISP_LH(0xeb000000, 0x00ea, REG_W0, src_reg, - dst_reg, off); + case BPF_STX | BPF_ATOMIC | BPF_DW: + case BPF_STX | BPF_ATOMIC | BPF_W: + if (insn->imm != BPF_ADD) { + pr_err("Unknown atomic operation %02x\n", insn->imm); + return -1; + } + + /* *(u32/u64 *)(dst + off) += src + * + * BFW_W: laal %w0,%src,off(%dst) + * BPF_DW: laalg %w0,%src,off(%dst) + */ + EMIT6_DISP_LH(0xeb000000, + BPF_SIZE(insn->code) == BPF_W ? 0x00fa : 0x00ea, + REG_W0, src_reg, dst_reg, off); jit->seen |= SEEN_MEM; break; /* |